Ever since 1945, the US has regarded itself as the leader of the “free world”. But the Obama administration is facing an unexpected and unwelcome development in global politics. Four of the biggest and most strategically important democracies in the developing world – Brazil, India, South Africa and Turkey – are increasingly at odds with American foreign policy. Rather than siding with the US on the big international issues, they are just as likely to line up with authoritarian powers such as China and Iran.